On Monday, former U.S. Secretary of Defense Robert McNamara died at age 93. Known best for his running of the Pentagon during the Vietnam War, McNamara was a polarizing figure for almost 50 years. So what is the McNamara legacy? Why did presidents Kennedy and Johnson trust him so much for so long? What did McNamara do well and what were his biggest failings? How was his version of events during the war far different than his explanation years later? How should he be remembered? We ask Dr. Mark Moyar, professor at Marine Corps University and author of “Triumph Forsaken: The Vietnam War, 1954-1965”. Listen and share your thoughts.